[TD-Linux]

I noticed this project is missing quite a few features common to modern image codecs, such as variable transform sizes, deblocking, or intra prediction. Of course, it's a work in progress, so those things could still be to come.

Have you considered using Daala's lapped transforms? They work with variable block sizes and are quite effective for still images.

Also, was there anything that motivated doing a custom image format rather than applying Butteraugli to WebP?

[JyrkiAlakuijala]

We have tried a large variety of approaches for the integral transform, but we were not impressed with the density/complexity/quality/decoding speed compromise -- at high image quality. We believe that we can only add a certain amount of complexity in this kind of format, and we try to keep our complexity budget targeted on solving the high-quality-high-decoding-speed image compression as well as possible.